Driver ergonomics and clean air

Nissan on Wednesday also announced feature for its vehicles, air conditioners that pump breathable vitamin C and stress-reducing seats.

The group is also looking to install "friendly" speedometers that can further improve the in-car atmosphere with timely reminders of wedding anniversary dates or birthdays, in the event the driver forgets.

"We want drivers to feel that they are healthier staying in the car instead of on the outside," a Nissan engineer said at a test drive event outside Tokyo.

The automaker plans to introduce air conditioners in its cars that spray vitamin C to moisturize skin and as well as air purifiers developed by Sharp.

Nissan also expects to equip its cars with heating "easy chairs" that incorporate NASA research to enable better blood circulation and reduce the chances of back pain during long drives.