Haven City or in the Spargus city, you get to do races for rare precursor orbs. Instead of using a vehicle for these races, walk! If you have the Light Jak power of time-freezing, it also freezes the time portals. It will take longer, but half way through, you would have stored up enough time to just car-jack a hover car or hop onto a lizard and stroll through the rest of the race with no worries.