Yes, it's cold up here but sunny yesterday and had to go to Ottawa in the car.
I tried a plug first but in keeping with my perfect record of 5 for 5, it slow leaked.
I put up with that all season on the bike and am not doing it anymore so using my beadbreaker and bike irons, got one side off and applied an internal patch.
It's easy lads, if you can peel a bike tire off an alloy rim without making any marks you can surely do the same with a car tire on a steel rim.
And when you're done, it pops back on without any fuss at about 30PSI. Nice!
If I lived near the tire guy I may not have tried, but I don't. My time was less than driving to town.
Independence is great!