Hookie Bobbing! (Or grab that car bumper to go fast on a skateboard!)

Suggestion:
I think it would be awesome to add the ability to grab the rear bumper of cars while on skateboards... it is a classic move that skateboarders use to get places faster! The way I see it working is while on a skateboard, third eye the rear end of a vehicle and select "grab on" to attach to said vehicle.(Third eye/select again to detach) If the vehicle goes over 40mph (or whatever speed the locals travel on surface streets in the city), there should be a chance to fall off the skateboard, letting go of the car and causing injury (starts low percent, increases with speed)

Reason:
Skateboards are awesome! This would enhance their use in a very fun way!