A car does Mainz to Frankfurt in roughly 39 min over 44 km. Both centres sit some way off the motorway, so 44 km of road covers 34 km of map and a real share of the journey is town traffic rather than open road. The difference from every other way of making the trip is that it starts at your address and ends at theirs.
The fare is fixed when you book, so a closed lane or a slow stretch costs you time and not money — there is no meter and no waiting charge. Pickup is any address in Mainz: a home, a hotel, an office, a venue. Drop-off is the exact address in Frankfurt, not the nearest station to it. The route crosses from Rheinland-Pfalz into Hessen; the price covers the whole of it including tolls.
One vehicle the whole way, one price, and a departure time you choose rather than one a timetable chooses for you. Journeys this length are mostly booked the same day or the day before, and the car can be at the door within the hour in normal conditions. Arriving by air instead? Frankfurt Airport Transfers covers every destination we serve from the airport.