I've put together some of the roadtrip costs I have going back a few years. There are some years that are missing, for various reasons (I'm presently searching for this info). Specifically, 1999 through 2002, which coincides with the years traveling in a 1999 Dodge Dakota.
I thought this might be an interesting list to see how costs have changed over the years.
1997 – Massachusetts to Yellowstone (2 weeks)
Vehicle: 1995 Plymouth Neon Sport
Mileage: 5012
Entertainment: $55.90 4.82%
Food: $311.51 26.87%
Lodging: $514.00 44.33%
Other: $34.40 2.97%
Shopping: $61.00 5.26%
Fuel: $182.65 15.75%
Total: $1,159.46
1998 – Massachusetts to Acadia (1 week)
Vehicle: 1996 Pontiac Trans Am
Entertainment: $10.00 1.88%
Food: $165.00 31.05%
Lodging: $137.00 25.78%
Other: $21.39 4.02%
Shopping: $147.00 27.66%
Fuel: $51.04 9.60%
Total: $531.43
1998 – Massachusetts to Shenandoah Valley (1 week)
Vehicle: 1996 Pontiac Trans Am
Entertainment: $55.00 11.14%
Food: $154.36 31.25%
Lodging: $117.00 23.69%
Other: $2.25 0.46%
Shopping: $103.68 20.99%
Fuel: $61.60 12.47%
Total: $493.89
2003 – Massachusetts to Shenandoah Valley to Cape Hatteras (2 weeks)
Vehicle: 2003 Volkswagen Jetta Wagon TDI
Entertainment: $77.62 4.53%
Food: $538.98 31.43%
Lodging: $637.00 37.14%
Other: $64.69 3.77%
Shopping: $373.37 21.77%
Fuel: $23.36 1.36%
Total: $1,715.02
2004 – Massachusetts to Kentucky (2 weeks)
Vehicle: 2003 Volkswagen Jetta Wagon TDI
Entertainment: $129.01 9.31%
Food: $429.81 31.03%
Lodging: $495.23 35.75%
Other: $6.10 0.44%
Shopping: $250.34 18.07%
Fuel: $74.65 5.39%
Total: $1,385.14
2005 – Massachusetts to Western Pennsylvania and Fredericksburg, VA (2 weeks)
Vehicle: 2005 Subaru Forester XT
Mileage: 1300
Entertainment: $89.00 5.59%
Food: $484.20 30.43%
Lodging: $609.30 38.29%
Other: $98.08 6.16%
Shopping: $50.96 3.20%
Fuel: $259.81 16.33%
Total: $1,591.35
2006 – Massachusetts to Ohio and Kentucky (2 weeks)
Vehicle: 2005 Subaru Forester XT
Mileage: 2652
Entertainment: $58.50 3.25%
Food: $488.92 27.13%
Lodging: $735.28 40.81%
Other: $12.85 0.71%
Shopping: $153.74 8.53%
Fuel: $352.54 19.57%
Total: $1,801.83
2007 – Massachusetts to Shenandoah Valley (1 week)
Vehicle: 2005 Subaru Forester XT
Mileage: 1684
Entertainment: $131.85 14.02%
Food: $286.69 30.50%
Lodging: $230.20 24.49%
Other: $17.90 1.90%
Shopping: $65.35 6.95%
Fuel: $208.13 22.14%
Total: $940.12
2008 – Massachusetts to Maryland Eastern Shore (1 week)
Vehicle: 2005 Subaru Forester XT
Mileage: 1322
Entertainment: $39.72 3.30%
Food: $459.01 38.13%
Lodging: $210.00 17.45%
Other: $180.10 14.96%
Shopping: $56.74 4.71%
Fuel: $258.19 21.45%
Total: $1,203.76
2009 – Massachusetts to Ohio, Pennsylvania (1 week solo)
Vehicle: 2008 Subaru Outback LLBean 3.0
Mileage: 1791
Entertainment: $35.75 5.02%
Food: $137.68 19.34%
Lodging: $339.68 47.70%
Other: $25.90 3.64%
Shopping: $0.00 0.00%
Fuel: $173.04 24.30%
Total: $712.05
2009 – Massachusetts to Virginia, West Virginia, Pennsylvania (1 week)
Vehicle: 2008 Subaru Outback LLBean 3.0
Mileage: 1933.1
Entertainment: $103.33 5.56%
Food: $729.42 39.22%
Lodging: $657.60 35.36%
Other: $22.07 1.19%
Shopping: $137.49 7.39%
Fuel: $209.97 11.29%
Total: $1,859.88
2010 – Massachusetts to Kentucky (1 week solo)
Vehicle: 2008 Subaru Outback LLBean 3.0
Mileage: 2414.7
Fuel: $257.38 31.48%
Food: $245.69 30.05%
Lodging: $271.58 33.21%
Tolls $4.41 0.54%
Entertainment: $28.00 3.42%
Other: $10.59 1.30%
Total: $817.65
2010 – Massachusetts to Maryland Eastern Shore, Virginia Shenandoah Valley (1 week)
Vehicle: 2008 Subaru Outback LLBean 3.0
Mileage: 1927.8
Fuel: $232.62 14.46%
Food: $659.68 40.99%
Lodging: $461.00 28.65%
Tolls $15.98 0.99%
Entertainment: $104.66 6.50%
Other: $135.32 8.41%
Total: $1,609.26