Directions on making an Enterprise reservation online are as follows: Go to the Pioneer Web (link is provided below). Please log in, click the "Services" tab and you will find the links for either a one-way or round-trip reserveration. This is Enterprise's preferred method since the office is not manned all the time, but they need a 2-hour window for reservations booked online. Pioneer Web The first window, after selecting either business or personal, will ask for location. If this trip is originating out of Grinnell, enter Marshalltown, Iowa. Enterprise will know the vehicle needs to be delivered to the Security office on campus. Personal rentals can be made with the Marshalltown office; however, you need to mention you are an employee of Grinnell College. If this is a one-way trip to Grinnell from the airport, enter the airport location and proceed from there. If you don't have a 2-hour window or need to make your reservation by phone for another reason, you may call the Enterprise office in Marshalltown at 641-752-1000 or 800-257-1136. If you are unable to reach anyone at this number, you may call 515-262-2222. You must provide date of trip, time of departure, specify size of car (our College carpool cars are in the "intermediate" size category, larger cars will cost more money), and you must provide the account number to which the trip will be charged. Enterprise will NOT make a vehicle reservation unless an account number is provided.Indicate the direction of the one-way trip--either to or from the Des Moines or Cedar Rapids airport. Enterprise can make arrangements for transportation in both directions with one phone call if you know those details. It is a good idea to double-check these transportation arrangements with Enterprise, particularly if these arrangements are made well ahead of time. Always ask for the reservation confirmation number for ease of future reference, and keep good records of reservation requests and cancellations to clarify later or future billing questions. We strongly urge you to check to make sure your vehicle has been delivered during Enterprise office hours if your trip is time-sensitive.