California governor Jerry Brown stopped by Google Tuesday to sign a bill that explicitly legalizes self-driving cars like those company co-founder Sergey Brin is so hot on. The bill — SB 1298, sponsored by Sen. Alex Padilla (D-L.A.) — essentially establishes safety guidelines and performance standards for autonomous vehicles operating on California’s roads and highways, the first step in their public deployment. Self-driving cars can now be tested on public roadways — as long as a licensed human driver is seated at the wheel and able to take over in the event of a malfunction. Read the full story at All Things D.