Newton's Second Law

This weekend while i was driving i had a physics epiphany.  I drove two very different cars this weekend, one was my Mom's large white Honda Odyssey van and the other was my Volkswagon Passat sedan.  I noticed that while both cars have engines with almost identical horsepower it takes much longer for the van to reach freeway speeds compared to the sedan.  i found that the reason for this was that the sedan is a much smaller car, thus weighing less.  Due to the formula F=ma the van which has significantly more mass takes more force in order to accelerate at the same rate as the smaller sedan.  This thought struck me as i was driving up the H2 freeway and noticed i had to press on the gas alot harder in the van than in the sedan.