 Hot Shot Secret Diesel Extreme is available nationwide at truck stops, fine farm and auto stores, and online at hotshotsecret.com. Hot Shot Secret. Powered by science. This is the Morning News with Matt and Rob. Let's catch you up. Who invented the Hi-5? I saw this brief little story this morning. I never thought about this. Exactly. Yeah. Did you know the Hi-5 has only been around officially since 1977? There's no way.