If you are driving a company vehicle...they have a right to know where it's going, who is in it, when it's being used, etc...
If your health insurance coverage is dictated that you are a non-smoker and you are seen smoking cigs every day in the vehicle, that coukd be a concern. (Also every company vehicle I've known has a strict "Non-
g Policy" for them).
Bottom line...dont leave bars at 1 am in a company vehicle and dtn't arrive at a strip bar at 5:01 pm and you should be fine.
Or...find a job where you drive your own vehicle and you cover all the insurance and expenses.