I bought 4 fuel cars thinking I could use them but when I go to the basket and they’re not there to use. I click on the fuel car and says I bought 4. The max was six and I bought 2 more and I can use the 2. Why can’t I use the other 4? This is ridiculous. I’ve sunk a bunch of $$$ into this game and it’s beginning to be not as enjoyable as I thought. Most dissatisfied.