It's basically as Mark described, but I'll go a little more in depth on the options.
Option 1: Going on your own.
Because you drove someone else's truck every time you ran, you will be able to go on your own. This means you will be able to build a truck of your own or choose a truck that isn't already being used and go on your own, but this means you would be solely responsible for keeping track of and posting your budget. Also, along with however much money Dano owes you from season 1, you'd get $10,000 since you'd be going on your own for the first time.
Option 2: Joining a new team.
This option is self explanatory for the most part, but again just like option 1 you would need to find out how much money Dano owes and that money would go with you into your new team.