I can count on one hand the number of times my mowing rig has even been on the highway. I like to keep it local.
I guess it really depends on how much of a difference there is in what you can get paid. Be sure to figure the actual cost of driving that 50 miles, not just fuel cost. The real cost of a 100 mile round trip commute is probably on the order $150 to $200 when you consider vehicle maintenance/depreciation and lost revenue from being in the truck rather than working.