LOL
You need to go to Harley-Davidson and buy one of those expensive locking gas caps fast! Might be a good idea since you have just insulted 2/3rd of the motorcycle riders in the US. What's your license plate state and number?
Or to convert the cap you have for free, go to HD.com and request the application form. It is called and "ID ten T" form. When requesting the form make sure you type out the request for the form with the name alpha-numerically like this with no spaces. ID10T
LOL
Ride safe and often!