I went to work today by car. The less often I do it, the more unusual it feels - it must be a couple of months since I last did it. I'm sure for most, it feels natural and is just a case of hopping in the car but for me, it didn't feel that way. Partly because changing mode means finding all the bits I need for a day at work, which are usually organised for cycling. It's also partly because of extra needed to commence a safe drive in a car such as demisting windows, adjusting mirrors etc.
I didn't enjoy it as much as cycling. My cycle commute flows a lot better, short though it is. None of the queuing and sitting behind the car in front. Probably significant is the isolation - only interacting with the radio that doesn't answer back, insulated from the outside world by glass and metal. It's not the same as talking to people (even if it is to tell them to watch out). By bike, from the off, visibility stays constant, temperature is pretty much the same all journey and it's more direct as I can go down side streets I wouldn't consider in the car.
One advantage of going by car is the time saved getting changed at either end of the day. The other thing today was is that it was a really nice morning for cycling - bad timing on my part.