meet the doughtys. dad, charlie, 20-year ice racing veteran. >> not as good as new but good enough to race. i've done it off and on since 1988. i was 16 when i started. in his footsteps, cody and nathan, who's just 15. how old do you have to be to get a license in minnesota? >> 16. >> so before you have your license you start ice racing? >> got to have a permit. >> reporter: mom paula, official score keeper for the league -- >> take these three bolts out. >> reporter: she's on board. >> it's about the fun, it's about the family time, it's about being with our kids, not having the cell phone, not having the television. they're learning about riding on ice, driving on ice. it's a huge, wonderful experience. >> reporter: and i'm learning on game day i may have to ignore some of the lessons of my youth. growing up in minnesota i think every kid, when they get their license, is probably told by their mom, never drive onto a lake in the wintertime. and she was right. driving on frozen lakes can be very danger