Our friend and bike trailer aficionado put together this great 9 part series of video posts about converting a shopping cart into a bike trailer. Tony offers a wide selection of bike cargo trailers at his site Tony’s Trailers. Officially, Tony is one of our competitors as a trailer manufacturer and distributor. But when it comes to the bike trailer market, we’re really all in it together. Tony has come up with some really unique designs for trailers and more than anything loves to share his passion for cycling and bike trailering.