I heard that at one time in his racing career, Jeff drove a Pontiac for a few races. Yes, there are diecasts available. Contact your local diecast shop for price and availability.
Drivers have contracts with their team owners for annual salaries.
In addition, various bonus incentives are written into the contracts. Contracts in general are not for public consumption. Therefore, I can only provide a rough estimate. That is before any bonuses, endorsements, or on-track winnings are factored in. He began racing bicycles when he was 4 years old and he began racing quarter midget cars a year later.