Your LIVE Sunday night motorsports show. F1 testing last week and more. With Jon Massengale, Jonathan Green and Bob Varsha. Watch the radio station studio stream LIVE at 

Speed City is America's radio voice of Formula 1. Hear our pre-race and post-race shows live on ESPN XTRA SiriusXM every Formula 1 Grand Prix weekend. And Motorsports talk Sunday’s 5pm on AM1370 from home city of Austin Texas. The Speed City F1 broadcast team continues to be anchored by Jon Massengale and Jonathan Green, celebrating their 7th year doing F1 radio on SiriusXM. The rest of the team includes the legendary Formula 1 broadcaster Bob Varsha, former Haas F1 Team Manager Dave O’Neill and popular journalist/broadcaster Chris Medland live on site at every Grand Prix with live interviews