Hello,Been looking at trucks-like the Freightliner fl70,Some have 350,000 miles.I have heard big rig trucks can go 750,000-1,000,000.How many miles is the smaller trucks good for??Is a used 2000 fl80 with 350,000 miles a good starter truck?Till I get some miles behind my belt?I don't want to start out on the wrong foot.Thanks for any advise.Jim