When you want to purchase a car but you do not have enough money, do not wait until you win enough for the purchase. You cannot get enough money to buy the good cars until the next era. For example, the Moby Dick car is $450,000 on the market in the 70s, but will be sold broken for over $2,000,000 on the used menu. The 365s in the 50's sell for between $11,000 to $13,000, but will be priced broken for over $100,000. When you are short of cash, buy the used cars, fix them up, then sell them for more. Collect money until you have enough to buy a new car.