I know of parents who would not let their baby sleep more than 15 minutes at a time during the day in the belief that it would promote better night time sleeping. No, that isn't how it works. Sleep begets sleep.
And it is accepted that good sleeping promotes overall health. New research indicates babies can also learn while sleeping.
See PhysOrg: Study shows newborns learn while asleep
So do whatever it takes to get your baby to sleep. If it means driving around or walking in the stroll for two hours then that's what you do.