[viking84]

thats weird i was under the impression that all the navs and almost all modern cars trucks had LSD diff and that open diffs are not used anymore, being outdated

Sadly the opposite is true. Most manufacturers these days are relying on electronic "limited slip" functionality, i.e. using the brakes and ABS sensors to slow down a spinning wheel. This is better than nothing, but not comparable to a proper mechanical diff, especially off road but also for "on the limit" handling when you are on-road. Sadly the cost of a proper lockable or limited slip differential seems prohibitive compared to using the ABS system which is already in place.

Note: Maclaren actually prefer the electronic approach due to supposed weight savings, but many complain that it is still unpredictable compared to a mechanical diff.