trucks can go over 100 blocks per second with the addition of gears but trains are still stuck going 20. and according to the wiki trains can only be 5% chests and 1% hoppers but trucks can be 6% chests and 4% hoppers meaning that trains dont make up for their lack of speed with extra storage and in fact its actually the opposite. its also not easy dealing with rail blocks that limit a lot of mobility and can be tedious to craft whereas trucks can produce road blocks with igneous processors and pave a road using a truck with block placers. the only thing trains can do that do trucks cant is utilize /cargo but the time it takes to unload a truck by hand doesnt even out the 5x speed. im not trying to say that trucks are overpowered since they have their flaws but it would be nice to see trains get a buff too.