I've had my Lance Vintage for about 400 miles (couple of months) but 2 days ago I noticed this strange "peeeeeeep" noise coming from either the battery, or the engine. I don't hear it while I'm riding the scooter, but when I take off the helmet. Anyone has any idea what can cause the noise? I'm emailed the dealer but no answer yet. Should I ride it back home from work, or grab a cab? )