That is an awesome idea. As long as the person wasn't creepy and I didn't already have a ride, anybody trying to get my attention for a business proposition could get it this way. But I agree that it would be better if they emailed..."I see you're hitting LAX tomorrow. I know you've been busy. Can I give you a lift to wherever you're headed from the airport and get that 10 minutes I've been looking for?" Awesome.