At each node, the players will make a skill check with their car's stats, adjust their position based on how it went, then choose which branch to take. I would let players gain advantage for smart or cool things their characters do. You may need to make it longer.
Just realized you probably meant the first point crawl. I would tell the players what they find in each node, then give clues about what lies in each direction. You'll need to flesh things out a bit.
