I was there last September. No, you can’t sit in the cars or even touch them (there are loads of staff members to make sure nobody touches them). The visit will take you no more than 40 minutes.
Also there’s a small room where you can hear the different F1 engines.
I hope this information will help you.
P.S. The best part is that in front of the museum you can rent Ferraris and Lambos for a period of time, you can discuss the price and get yourself a treat.. I drove a Ferrari California and it was amazing (They let you floor the accelerator near the Ferrari Factory), but the drive experience is not related in any way with the museum.
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