Adds a link on the top of the racing page to start a custom race in 1 click.
To use this script, you need to change the carID on line 13 to your car ID. This can be found either by hovering over the select button for the desired car when starting a custom race and looking at the link on the bottom of the screen or via the api
(https://api.torn.com/v2/user/?selections=enlistedcars&key=)
It currently is set to 1 lap speedway races called speedway but that can be changed by changing the laps, track, and title fields in the url on line 23.
If there is interest I can make it more user friendly, it's pretty slapdash because I only needed it to do 1 lap speedways to help me get the leaderboard merit.
Credit to Ahab for helping me with the link.