Seconds before he plowed his $4,000 bike into Connecticut mom in Central Park, leaving her brain dead, speed-demon racing cyclist Jason Marshall zoomed down a pedestrian lane and crossed over into the vehicle lane of the park’s West Drive — even though neither is legal for cycling, The Post has learned. Law-enforcement sources say that moments before Thursday afternoon’s accident, Marshall was barreling downhill in the lane restricted to pedestrians and child bicyclists.
