The RW4 is 3-4 lbs. heavier than previous model yet it's two plus inches lower, smaller wheels,and no running boards. I wonder why that is. The smaller22" wheels on a heavy cargo bike seem too small esp. when going over potholes,curbs,etc.  And  a trigger  or twist shifter would be welcome- thumb shifters are harder to operate for me. Also,for such a heavy e bike Rad needs to bump up the ah s on the battery to give more range- say 17  or 21 ah s .   On the other hand,it's nice that Rad continually improves their models. Looking forward to seeing what else they have to offer us Rad riders.  My first post- I hope I didn't mess up on my first post- ever!