The problem with electric trucks when comparing emissions is that people quite often fail to take into account LCA and assume its a clean fuel. OK, maybe it is in Scandinavia where electricity production is mainly Hydro Electric but in the rest of the world that is not the case.

For comparitive emissions using CO2 as the base:

LPG - 0.234 kg/Kwh
Oil - 0.265 kg/Kwh
Electric - 0.422 kg/Kwh

If you take an average bulk price in the UK, then you're looking at circa 40ppl compared to 55ppl for red diesel rising to in excess of 90ppl for bunded product. So, to suggest that one form of energy clearly provides benefits over another is misleading because, although there is now more overlap between the fuels in terms of benefits/operational usage you cannot state that one should be used in all cases.