I plan on a lean Christmas too, with cost of everything going up I will watch the pennies more closely than I usually need to. The food shop is rinsing me at the moment.
My work did that once
Most of us drive on a 70mph road to get to work so cycling not really the feasible option for many due to the distance/safety. Cycling is fine if within a couple of miles but most travel 10+.
Edit to add: they also tried to get us to have car buddy system but having to match up finish times with someone in your area becomes really inconvenient and a chore. I once gave a colleague a lift for a month while they had various car issues and I was glad when she got her car back as doing small talk at 8am is not fun
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Oh and the bus service is crap near my work, it's only really feasible on foot for locals, or by car, due to the awkward location (not a city centre).