What phobia makes you feel anxious or fearful when you drive or ride in a vehicle, like a car, bus or plane?

all three of my coworkers had this. they asked me if I could pick them up for work and they would pay me. sometimes I would feel tired of doing all the driving. I would wish that it would be like a carpool where everyone took turns driving. these ladies were all older than me. within 10yrs they retired and l was no longer their driver.