I didn't say that it would cost x sales in y time, or even that it would harm sales at all. My point is that it would be interesting to see the interaction between a car manufacturer's EULA, and a dealership's retail staff. I mean, do car salespeople even understand what a EULA is?

It's not like selling Windows 7 in Best Buy. The cashier at Best Buy does not care whether I hate the EULA or buy Windows. The car salesperson probably cares very much about whether I buy the car, and they probably don't care much about some random EULA term.

Granted: a bit off-topic perhaps. I would hope that such blanket permissions terms on sales contracts would be overridden by the protections written into the law. For instance I don't think health providers can undercut HIPAA protections no matter what their contractual terms say.