If they put that on a planet (or asteroid in this case) everybody is going to be like yeah thats a ton of fun but why dont we have that on other planets? xD.. And everyone will ask for more. The idea is fun, they certaintly need to put some fun stuff to do. But i'd rather have sparrow races as a game mode in the crucible where you can race on the maps that you already have, rather than put ir on a specific location. Also, we need Private matches for the Crucible with customizable options like extra / less health and low gravity and no super allowed, stuff like that to just go in a crucible map of your choice with a few buds and have fun! ;)