Motorcycle Chase, modernized steeplechase rollercoaster built in 1976 by Arrow Development, featured single motorbike themed vehicles racing side-by-side, each on one of four parallel tracks, launched together. One or two riders straddled each "Indian motorcycle" attraction vehicle. The tubular steel monorail track closely followed dips and bumps in "the road" and tilted to lean riders about the curves. Gasoline Alley, an electric steel-guiderail car ride below, was built together and intimately intertwined, which enhanced ride-to-ride interaction thrill value. Rider safety concerns of the high center of gravity coupled with the method of rider restraints caused it to be rethemed Wacky Soap Box Racers with vehicles themed to look like soap box racers, each seating two riders, strapped in low (nearly straddling the track), surrounded by the close fitting car sides, and the dips and bumps of the track were straightened flat in 1980.