The developers showed the Team Adventure feature in the July 31 livestream:
https://youtu.be/-48iz6RTly8?t=1446- Event score is based only on finish position, not style or clean
- Every team member's position matters in a race for points
- Team Adventure is based on best-of-five events
- Free Roam Rush to destination doesn't have any checkpoints
- Rewind works in Free Roam Rush (you go back as others continue racing)
- Survival is a mix of Free Roam Rush and playground mode: one team is a zombie team trying to tag/infect the other team members against a timer, while allies can tag/heal infected team members. The teams then swap.