today after i got out of a store i turned my car on to hear some kind of rattling sound or grinding...sounding from under the car..i punched the gas a few times and it was still there and then i turned it off and turned it back on and it went away.. i have a 2000gsr with about 40k on it.. if anyone knows what this is.. let me know plz . . thanks

 

that could be anything dude, exhaust loose maybe? need more specifics