I have a 2007 Toyota Sienna (automatic transmission) that has been sitting for about half a year and today I took it for a drive and it failed on me while driving. After driving for a short period ~ 5 minutes the engine would rev but the car won't move anymore. It would work again after I wait a few minutes and restart the car. I also noticed that there was an excessive amount of noise when it was running idle. Does anyone have any idea what could be the problem?