You're the cart. Hop one space at a time with the arrow keys / WASD, a swipe, a tap (hops forward), or the d-pad.
Parking lot lanes: dodge cars, trucks, runaway carts and forklifts.
Loading dock: ride the conveyor belts and pallets. Fall in the gap, or ride off the edge, and you crash.
Grab sale coupons for bonus points. Chain them without crashing for x2, x3...
Roll through a store door to finish the crossing. Fast, clean crossings score big.
3 lives, +1 every 5 crossings. Each lot is faster and busier than the last, but every one is checked by computer to be crossable.