Corporate Aircraft Mobil Maintenance, LLC

According to the website:

Exxon Mobil is an American multinational oil and gas corporation that operates a gas station in Spencer, IA, among other locations in the US. It is the largest direct descendant of John D. Rockefeller's Standard Oil and engages in the exploration, development, and distribution of oil, gas, and petroleum products.

Products and services they offer:

Whether you need to fill up your tank, get a car wash, buy snacks and drinks, or use the ATM, you can find it all at Exxon Mobil. You can also enjoy the benefits of the Exxon Mobil Rewards+ program, which lets you earn points on every purchase and redeem them for savings on gas and more.