In the early '90s, in the time before widespread cellphone use, and on a day with a temp of 0°F, I volunteered to drive a Mack Midliner 6 wheeler from Syracuse to Buffalo. Not my job, but it helped out a co-worker friend who needed it done. About 25 miles away from Buffalo, it started failing to rev. I thought it was freezing up, and had a few choice words for my friend, who assured me the fuel had been adequately treated. Then I got a strong odor of raw diesel, and knew I'd sprung a leak. By now it was barely running, so I pulled to the shoulder of I90. I tilted the cab forward, and could see fuel spraying from a 2" split in a supply hose. I scrounged in the truck, and came up with a roll of electrical tape and a stick pen. I had a pocket knife (always), with which I trimmed the hose, and stuck the pen tube in either end. I taped it up as best I could, and it held until I delivered the truck to the warehouse. I couldn't believe it. Today, with the high pressure electronic injection, it would never have held. But, a cell phone would have had help on the way, which evens the score a bit.