Google (and several other tech companies) provide an employee bus for workers. It's a nice perk, and environmentally friendly too.
Left-wing hooligans are now threatening the Google buses because apparently, Google employees, being well paid due to their skills and hard work, are pushing up property prices and rents in San Francisco, especially along the employee bus routes.
I hope the idiotic left-wing protests succeed, and Google, Facebook and Linkedin are less wedded to Silicon Valley for their future plans. After all, London is in a prime position to be the beneficiary.