Companies Allowing Employees to Fly

Question...

I have to do a lot of regional travel for my company and, due to the
work we do, most of my work is actually at airports. I've asked my
company if I can use my personal aircraft for a lot of this travel and
they denied my request due to what the company percieves as their
liability in the matter.

Is my company misguided or do they really have some liability if I use
my airplane instead of my car for regional travel? What's the
difference between me crashing my airplane into a school (their
example) or plowing my car into the same school's bus stop?

Steve
CP - ASEL/IA
PA28-151
N43291