Thanks for the reply flyboylike.
Sadly the 2 hour commute is a regular occurrence, due to a combination of fender benders (or the people who slow down to gawk at them) and slow moving traffic on single lane country roads.
I'm very early on in my training so just trying to get a feel for the true cost of making those short trips in terms of gas usage and whether it would realistically save time, taking into account planning, checks, basically all the pre and post flight ground activities.
In addition to time/cost considerations I thought it might be a good way of keeping skills fresh and practicing plenty of take-off/landings. Not to mention it'd be a lot more pleasurable the crawling along the highway!