Having plenty of experience of the two kids conundrum (twins, 3.5 yrs old), you don't get a choice which side to put the seat on. You can get both kids to clamber into the car from the pavement side, strap the first one in then go round to the offside to strap in the other. Simple. Any sensible parent will try to instil some fear about dangerous traffic from an early age, but without making children so scared they'd never get on a bike ;-)
Having plenty of experience of the two kids conundrum (twins, 3.5 yrs old), you don't get a choice which side to put the seat on. You can get both kids to clamber into the car from the pavement side, strap the first one in then go round to the offside to strap in the other. Simple. Any sensible parent will try to instil some fear about dangerous traffic from an early age, but without making children so scared they'd never get on a bike ;-)