That’s rich. Residents of a wealthy Silicon Valley city are lining up for heavily subsidized rides around town — that will cost them peanuts. Sunnyvale, Calif. officially launched the affordable Beam service on Sept. 1 — a public, on-demand rideshare that will take users anywhere in the city for a flat rate of $3.50. The Bay Area burg is one of the wealthiest municipalities in the entire country — with a median household income of $186,170 in 2024, according to a study from MoneyLion. Operated by Via Transportation, the beams fleet includes six Kia Niros and three Ford E-Transit vans, city spokesperson Jennifer…