Can driving a car affect my joint hypermobility?

No. Not exactly sure what you're asking, but I am inclined to say no. The mere act of driving would not worsen the condition and should not typically exacerbate symptoms. Unless there is exceedingly prolonged positioning in the car which theoretically could lead to some pain in general. Although I would expect that in anyone, not just those with hypermobility.
No. Driving a car should not effect your hypermobility.

Related Questions