Where We're Going, We Don't Need Roads

This can be combined with Great Scott! if you go for a glowy golden ball on one of the abandoned car transporter trucks; you'll get a speed-accelerated jump into the air with that!

Or, depending on your approach to an exit gate, you may get some air off ground bumps and the low-grav/levitation as you enter the gate will keep you aloft for longer. Its reasonably likely you'll get it this way without having to make much special effort for it.