Should Jim sell his gas$-$guzzler?

Jim's $1998$ minivan is quite functional, but it only averages $20$ miles per gallon $($mpg$).$ He has found a somewhat newer vehicle $($roughly the same functionality$)$ that averages $26mpg.$ He can sell his current minivan for $$2800$ and purchase the newer vehicle for $$4,000.$ Assume a cost of gasoline $$4\mathrm{.}00$ per gallon How many miles per year must Jim drive if he wants to recover his investment in three years? Assume an interest rate of $6\%,$ zero salvage value for either vehicle after three years, and identical maintenance cost.