The free ride for tech companies San Francisco may be over soon. A new city pilot program could begin charging companies like Google, Apple, and Facebook who pick up employees to shuttle them elsewhere using public bus stops, reports Reuters. On top of that, there would be new rules that limit where those buses can stop, where they can go, and that require them to get out of the way when local buses come through. The program, which was announced today by San Francisco mayor Ed Lee, and goes to a vote in the next few weeks, could bring $1.5 million in revenue to the city. …