I always had DS at home for the first nap (good long one) and car napped the rest. It was honestly a drag for me because once he was in the habit of the afternoon nap being in the car he was a nightmare to get to sleep in his cot for the afternoon. Whilst it was great to fit in the baby groups etc by car napping the afternoon I found I longed for a day or two at home and actually that ended up hard because of the nap situation. I also ended up stuck in the car waiting for him to finish his nap which meant a long boring wait for me! Pros and cons. I can't imagine another way I could have done it really so it's just one of those things.