It may not all be roses ,but it should make a difference.I to was in a car accident ,that left me in neck pain.Three years of riding a (df) just instigated the problem,to the point where I was in constant pain.
I joined a gym where they put me on a program to loosen my tight chest muscles and loosen my rhombhoids.I also bought a EZ-rider Speedster and can ride for 3 hours with minimal discomfort.I can`t ride a (df) for more than 25 minutes with out numbness ,tingling and pain in my neck and shoulders.
I`d suggest a recumbent.....