for his research, viscelli tracked down truckers and their families, like shawn and hope cumbee of beavertoney, hope, i'm steve viscelli. >> hi, steve, nice to meet you.e >> to meet you, too, thanks. >> come on in. >> narrator: and their son charlie. >> this is daddy, me, daddy, and mommy. >> narrator: but daddy's not awn cumbee's truck has broken down in tennessee. hope, who drove a truck herself, knows the business well. >> we made $150,000, right, in a year. that sounds great, right? that's, like, good money.00 we paid 00 in fuel, okay? so, right there, now made $50,000. but i didn't really, because,t you know, you oil change every month, so that's $300 a month. you still have tdo all the maintenance. we had a motor blow out, right? $13,0. right? i know, i mean, i choke up a little just thinking about it, because it was... and it was 13,000, and we were off work for two weeks. so, by t of the year, with that $150,000, by the end of the year, we'd made about 20... about $22,000. >> narrator: in a truck stop in tennessee, shawn has been sidelined waiting for a new part. the garage owner is