Ohh Metro- Tu me manquera ! (I will miss you)

The thing that I will miss the most when I return to the US (besides the wonderful people that I met) is the Public Transportation in France.
Here is the breakdown of my commute to work:

Commute by Public Transportation:
CiteU to St-Cyr = avg 1.1h one way= tram to train to bus to work
Weekly Navigo for 5 zones= 33 Euro (50.04$)*
Upfront cost of pass (one time) = 5 Euro (7.58$)*

Pros- With Navigo- you can go anywhere in Paris with the one pass (including all the way out to the airport and all the way to Versailles- which are in the 5th zone).. Essentially- it’s like having a “Fast Pass” and being able to use fast lanes in the metro stations.
It is geared towards commuters though- as you can only purchase weekly/monthly passes at the beginning of the week/month.
You can read/write/snooze/chat on the commute..
Cons- sometimes cannot get a seat during high commute hours (rare), sometimes you do not like (the smell of) the people sitting next to you (also rare ;)

Commute by car:
22km CiteU to St-Cyr = 26 minutes estimated driving time by Google (in a perfect world)
22km= 13.67 miles
Say you drive a car that gets 21 miles/gallon-
13.67/21= .65 gallons x 2 times a day= 1.3 gallons
1.3 gallons x 8.56 $/gallon ($/gallon Paris France Apr 2008**) = 11.13x5 days a week = 55.65$ (6 days= 66.78)
Just going to work (5-6 days a week) not including other rand and weekend excursions (groceries, entertainment, etc.)
(5) 55.65$ = 36.7 Euro*
(6) 66.78$= 44.03 Euro *

Pros- “faster” when there is no traffic (summer)
Cons- more expensive to own, maintain a car (not including tickets or accidents)

*1 Euro= 1.51 USD (10 August 2008, from Citibank N.A.)
**2008 http://www.unsolvedmysteries.com/usm503658.html