Update March 2015 - The Roman Guy is not currently offering this tour, but has many others to choose from. Follow the link for more information.
I love to walk. Years of living in countries where taking a walk was not practical or even downright dangerous took it's toll on me.
One of my favorite apps on my phone is Moves, where I track how far and fast I walked and where I went. Now that I live in Rome, I rarely take public transport and would much rather walk for an hour than wait and squeeze on a bus or go underground.
The "Eco" Rome Golf Cart Tour zooms you around all of Rome's main sights and some secret spots too. This tour is a wonderful alternative if you have guests that can not or do not want to walk all over town. It is also great way to cover a lot of ground in a very short amount of time. There is even a stop for gelato.
I was an invited guest of The Roman Guy, but all opinions are my own.