arthur davidson and bill harley decided they wanted to motoriz d a bicycle. and bill harley by that point being an accomplished draftsman actually drew the drawings of this early engine. you can kind of see the date down there in the right corner. it's july of 1901. the little bicycle engine. there are two sheets, we only have one but it's miraculous that we have one. so they were working with a local machine shop and local foundries, made this engine. put it in a bicycle. thought, that's really fun, we think, and decided to make a full fledged motorcycle. but that's sort of the foundation of the harley-davidson motor company right there. >> this story really could only have happened in milwaukee. if you think back to the beginnings of the 20th century, milwaukee was known as the machine shop of the world. this was a real kind of manufacturing center. so these young guys kind of grew up in the city where people made things. they brewed beer, which is one of the things that made milwaukee famous. but this was kind of the leather industry here, tanneries, found

arthur davidson, i think, was really critical to the company's that he d success in was the person who took on the started traveling around the country and signing up dealers and setting up an network.ealer he real task for harley-davidson was to convince people that this thing, this new making, is e're really good, economical, reliable, family transportation. the turn of the 20th century, f you were moving in anything other than a train, you were out in the elements. a horse. horse and buggy, an automobile, a motorcycle, an irplane, everything was open cockpit. and it was all new and it wasn't the automobile was going to become kind of the favored form of transportation you got doors and windows and a roof. for the first 15 years of the harley-davidson motor company hey were really focusing on getting people to accept these vehicles as the way that families are going to get around. we had side wars. you could put a couple of kids in. of a challenging sales pitch there for a little while but it was exciting enough that, you know, the motorcycle was really embraced harley-davidson was o

. >> arthur kaplin, a cnn medical analyst and dr. rob davidsond the executive director of the committee to protect medicare. art, to you first here. we heard the head of operation warp speed saying he's confident a vaccine can be ready by year's end but you actually wrote in an op-ed it could take, brace yourself, 20 years to determine if a vaccine is safe and effective. is this goal by the white house of a vaccine by the end of the year and the president said available for everyone, is that even possible? >> no. it's ridiculous. vaccines have to really be proven very, very safe, as well as effective. you're going to roll them out to hundreds of millions, if not billions of people. that's going to take more than testing it on humans by the fall. you also have manufacturing quality issues that have to be tended to very, very closely and you know, brianna, some vaccines, the duration, you might get immunity response in a year, that's what we get in say, the flu vaccine and the flu vaccine only 40% effective. this idea that we're going to vaccinate