Haha. With out the spray the driver boots it and no wonder he spins the tyres. Once the spray is on then he feathers the throttle and off he goes. I guess that that must be down to the liquid chain rather than driving properly. Far too predictable.
Even if it does work, I can't believe it stays on the tyres for that long, you'd have to be applying it every few miles I would guess. Although if it did get you out of a sticky (or slippy) situation, maybe worth it.