She grins at him, and once the garage door has opened up far enough (with all the whistling and rushing of air that comes with it) the vehicle jumps forwards and then shoots off out onto the sand.

Poison, in a word, drives it like she stole it. With no concept of when she should be slowing down she leaps the thing over dunes and it's only a solid suspension system that keeps it from falling apart.

As they start to near their destination, however, she does ease off the gas. There's nothing about sending them flying into a pit that sounds like a good idea to her.