william harley and henry ford. >> a lot of these machines were borne out of rivalries, so the motorcycle, for example, comes out of a great rivalry between harley-davidsonentity when he didn't even have anything, it's like, just mind blown. >> reporter: the series highlighting competitive entrepreneurs just as the billionaire space race is under way premiering july 18th days before jeff bezos is set to launch. >> there's this rivalry to get to space, consumer space travel, you know, with amazon and virgin going at it. that's a great thing because competition really leads to innovation. >> "machines that built america" premieres with a double episode this sunday on the history channel. >>> and coming up, we have a family reunion you do not want to miss. it is a big surprise. jason, did you know geico could save you hundreds on car insurance and a whole lot more? cool. so what are you waiting for? mckayla maroney to get your frisbee off the roof? i'll get it. ♪ (upbeat music) ♪ ♪ ♪ whoa. here you go. (in unison) thank you mckayla! dude, get it. i'm not getting it, you get it. you threw it. it's your frisbee. geico. switch today and see all the ways you co