I had a relatively large increase in car driving ability once I started motorcyle riding. I think everybody should take the motorcycle course (32 hours or something like that) even if they never ride again. It's been very helpful to me. It also makes a rider far more aware of how little attention is given to safety protocol by a lot of car drivers.As a motorcyclist, I would love nothing more than vehicle drivers to apply the same amount of concentration as we motorcyclists do when riding. Being on the phone only makes this dream of mine even more impossible...
I had a headset for a year where I could talk on the phone while riding. Not the best idea I ever had.