Peg Perego Primo Viaggio Convertible, Licorice

Is this a good seat to use for traveling by airplane?

Can you buy additional bases for this? Or would I need 2 car seats for 2 cars?

Has anyone installed 2 of these side by side? I need to have access to my 2011 Honda Pilot’s 3rd row.

Are you able to install this without the base? We obviously wouldn't do this often, but it would be nice not to have to lug the base as well.