CNG is a fuel that is rapidly expanding in Europe. Germany has a respectable network of fuelling stations, and it's actually a very competitive fuel for delivery and commuting. The environmental benefits are remarkable: although they don't lower CO2 emissions by a large percentage, CNG does do away with the rest of nasty pollutants other fuels have, such as NOx and particullates.
The Iveco Daily CNG is powered by a CNG gas engine made from the standard 3.0 diesel (gasoline trucks are almost non-existent in Europe) good for 136 HP that suits both the Euro IV and V regulations for trucks. It carries the gas in an array of 5 gas tanks (up to 220 liters) with the possibility to add a 6th one (which increases capacity to 250), however, the range of the vehicles is not announced (my guess is about 200-300 miles, if it's compared to CNG cars). Total weight ranges from 3.5 to 6.5 tons (metric). This division is made because of European driving license, which allow trucks to be driven with a standard car license as long as the maximum gross weight of the vehicle does not exceed 3.5 metric tons.
As the rest of the Daily range, the truck is offered with both single or double rear-wheel configurations, with single or double cabin, with just the chassis or as a panel van.
Iveco has also been speculating about an upcoming hybrid model, but this information is not yet available.