I know that the gabapentin relieves some of the pain and burning, but to my knowledge nothing affects the numbness. It is, by definition, a lack of sensation, and no medication that I know of will fix that.

I cannot feel the accelerator at all, and keep a close eye on the speedometer. I also have to be very careful which shoes I drive in, some throw me off completely and make it impossible to keep my foot on the pedal. A few times my foot has slipped and I have had a scary second or two trying to put it back. I only drive locally, at low, in town, speeds.