[eec]

I'm not sure that it's legal or not but it is certainly widely adopted. I'd imagine that it becomes "illegal" once it's monetized beyond shared expenses. If you help pay for the gas/service of the vehicle, that's quite a bit different than paying for the service. Just my hunch.

[twainer]

I am not sure either, but I would agree. Insurance/liability and licensing are significantly more complicated when one is driving for a business and transporting passengers. So-called 'commercial' driver's licenses face much more stringent regulation and subject the driver to health+saftey standards.