We drove from Amanbagh to Agra in 3 hours at a time when there was no traffic. Amanbagh arranged the transfer.
Then, later in our trip, we drove from Agra to Delhi which took 4 hours. There was a little traffic during this trip. Oberoi Amarvilas arranged the transfer.
I honestly don't mind the car transfers. I find it an interesting way to see the country, the villages, people, etc.