[upsdriver]

I understand that property rights must be respected.

I do too. However, my private vehicle property rights supercedes his parking lot property rights, imo. As long as my guns stay in my vehicle, I don't see where he has the right to violate my property rights.

[Poison Pill]

my private vehicle property rights supercedes his parking lot property rights, imo.

If you have permission to be there

As long as my guns stay in my vehicle, I don't see where he has the right to violate my property rights.

But he does have the right to deny you entry, set terms of entry or revoke permission after the fact. If he does, you and your vehicle have to go.