Driving/flying tips…

So I have a bilateral disc bulge at L4/L5 and a smaller one at L5/S1 (according to last MRI, but that was 6 months ago and I’ve had two “acute periods of injury” since then so who knows) and awful nerve and back pain when I drive. I have just paid out of lot of our savings to get a new automatic car where I sit higher in the car and obvs don’t use my left leg, but I’m still in a lot of pain after driving for around 20-30 minutes. I am seeing a neuropathic surgeon in October (NHS waiting lists) and have a holiday booked in September (booked when I was feeling much better). I’m now terrified of the flight and how much pain it’ll cause me, and am unable to visit family who live around 1 hour away as the pain from driving is too much. How are you guys managing situations where you have to sit and not move for longer periods?