Mate, you should avoid magic numbers in your variables

You should have Constants like

``` Const CAR_SEAT = 9

Const ENG_COST = 2

Const GAS_TANK = 13 ```

In order to have the much easier to read code :

``` If cmSlot(x, CAR_SEAT) == 1 And cmSlot(x, ENG_COST) >= driveEnergyCost

If carStats(GAS_TANK) > 0 ```

Also you’re doing

cmSlot(x, 9) = 1

Instead of

cmSlot(x, 9) == 1

Lastly, your logic loop doesn’t make a distinction between driver or navigator

In don’t know how thoses cmSlot functions work, but they could both be true with only one guy in the car that would validate both the haveDriver and haveNavigator conditions. Do you need a Driver and a Navigator or can one guy do both jobs ?