Polite drivers.

Hi all,

I ride a recumbent trike. I find - in general - drivers are
very polite around me. After a few discussions with passers
by and so I think I have the reason.

It kinda looks like a wheel chair. Many many times I have
been asked if I can walk (what the hell do they think is
spinning the pedals). I am wondering if drivers think I
have some sort of disability and that they should be extra
polite to me.

Thoughts/comments?

Everso.