Yes (but not in a Maserati).
I used Gliptone products to clean, condition and re-dye from
http://www.liquidleather.com/ on my 152,000 miles 27 year old Porsche 944 interior to great effect.
Here is a before. It wasn't as dried out and cracked as yours, but I think the solution is that you need to treat the leather more to make it more supple first
DSC_1010 by
corranga, on Flickr
Note the white on the left was after I repaired and filled a hole, and sanded it back to the right sort of shape.
and the final job..
DSC_1168 by
corranga, on Flickr
I used:
GT12 INTENSIVE CLEANER
GT11 LEATHER CONDITIONER - I gather this is the step you might have to repeat.
then GT12 again.
GT14 SAFETY SOLVENT CLEANER
then some alcohol based cleaner I bought on eBay - they recommend their GT18 but being flamable, it needed £30 couriering to me as their courier thinks I live in the Highlands! :S
and finally SCUFFMASTER DYE in the correct colour for my seats.
Total cost was about 90 quid, and I bought 1 litre of the dye which is enough to do a full interior (4 seats) plus I'd say.
I don't know how well it holds up, but have spoken to others in car clubs who say 4-5 years, which I think is very reasonable for the price.
I've also used it on the vinyl pull handles on the Porsche to great effect.
I emailed them a couple of times prior to purchase and they were really helpful.
Chris