Car slowed down, gauge going crazy, came to a complete stop wouldn't move

Hello, sounds like there's a major concern here that needs to be diagnosed. No way to guess what it is until hands-on testing is performed. Could be a transmission related concern, could be an engine performance related concern. Either way, testing must be done so that you can find out what's going on or what needs to be done to resolve it. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops