The following pictures are meant to display possible physical characteristics of the present invention and are not to be taken in a limiting sense. It is understood that other embodiments may be utilized and that structural changes may be made without departing from the scope of the invention.

LIST OF REFERENCE NUMERALS 10 present invention 40 hoist 12 trailer 42 winch 14 roof 44 wheel 16 fold down floor panel 46 clamp 18 expandable wall 48 solar panel 20 fold down door ramp 50 jack 22 piston 52 user access door 24 fan 54 sliding rail 26 anchor chain 56 door crank 28 vehicle 58 adjustable channel 30 user 60 front of 12 32 generator/compressor 62 rear of 12 34 air tank 64 cable 36 tow bar 66 bearing 38 stationary floor

FIGURE 1 FIGURE 1 is an illustrative view of the present invention 10 in use. The present invention is a mobile repair shop 10 comprising an enclosed trailer 12 for performing vehicle repair including frame straightening and spray painting. The trailer incorporates hydraulic pistons, unibody clamps, exhaust fans and solar panels for generating electricity. Shown are the user 30 and a vehicle 28 loaded onto the trailer 12 with the slide-out roof 14, fold-down floor 16 and wall 18 sections employed in the expanded position with the fold-down door ramp 20 down. FIGURE 2 FIGURE 2 is a top view of the present invention 10 with expanding walls 18 in a closed position. Shown is the trailer 12 having expandable walls 18 that ride on rails and are moved in an outward direction by pistons 22, with fold down floors that fill the open gaps when walls 18 are moved outwardly. The trailer 12 further includes a plurality of anchor chains 26, fans 24, air tanks 34, a generator/compressor 32 and a tow bar 36. FIGURE 3 FIGURE 3 is a top view of the present invention with expanding walls 10 with expanding walls 18 in the open position. Shown is the trailer 12 having expandable walls 18 that ride on rails and are moved in an outward direction by pistons 22, with fold down floors 16 that fill the open gaps when walls 18 are moved outwardly. The trailer 12 further includes a plurality of anchor chains 26, fans 24, air tanks 34, a generator 32 and a tow bar 36. FIGURE 4 FIGURE 4 is a top view of the present invention 10 with the expanding walls 18 in an open position and a vehicle 28 on the central, stationary floor 38 within the trailer 12. FIGURE 5 FIGURE 5 is a side view of the present invention 10. The trailer 12 is equipped with a plurality of solar panels 48 to provide auxiliary power and ventilation fans 24. Also provided are clamps 46, access doors 52, a hoist 40 and winch 42 and a plurality of jacks 50 to lift the wheels 44 of the trailer 12 off the ground. FIGURE 6 FIGURE 6 is a rear view of the present invention 10. Shown is the trailer 12 having expandable walls 18 that ride on sliding rails 54 and fold down floor panels 16 that fill the open gap when the walls 18 are moved outwardly. Also provided is a fold down rear door ramp 20 for vehicles to drive up into the mobile service station. A door crank 56 is used to raise and lower the door ramp 20. FIGURE 7 FIGURE 7 is an end view of the present invention 10 having expandable walls 18 fully expanded by the pistons 22 with the fold down floor panels 16 have been lowered from the closed position to the open position and the door ramp 20 raised and closed. FIGURE 8 FIGURE 8 is an end view of the present invention 10 having the expandable walls 18 in an open position and the fold down floors 16 lowered. Shown is a vehicle 28 inside the trailer 12 after having driven up the door ramp 20 and having the tires guided therein by adjustable channels 58 that are positioned according to the width of the vehicle 28 to be worked on. FIGURE 9 FIGURE 9 is a top view of the slide walls 18 of the present invention 10 disposed at the front 60 and rear 62 of the trailer 12. The door ramp 20 is closed and the slide walls 18 are in the closed positions and depicted in the open positions in dotted line. Also shown are the access doors 52. FIGURE 10 FIGURE 10 is a side view of the right slide wall 18 of the present invention 10 depicting the relationship with the associated cable 64 and bearing 66 setup.