Good news for anyone with an E-ZPass… you can now start to use it to save some money on gas.

E-ZPass has partnered with PayByCar, a new system that allows drivers to make purchases while they’re still in the car. Once you sign up, you can link your account to your E-ZPass transponder and add a credit or debit card.

Starting Monday, there is an offer that lets you save money on gas that runs through February 10th. You can use this system to buy gas at several Alltown gas stations in Massachusetts and save 30 cents a gallon. You are allowed up to five gas station visits.

See the full list of participating gas stations here.