Heres some rough numbers for ya....
2 vehicles .. 1 Dodge ram van 1998 model the old style with the 318....approx 500,000 mile 2000 to 2004 Income approx $250,000
then the 2005 Dodge sprinter 1.2 million miles....2005 till 2016 income approx $800,000
done all 48 states and 6 Canadian Provinces...