The robotaxis will be a 2 seater for a number of important reasons: 1) Most importantly: it's cheaper to make and operate! 2) Vast majority of rides are with <= 2 people in the car. 3) Unlike with owned cars, a >2 people trip can easily be accomplised by booking >1 robotaxis. Overall, this is still much cheaper than the carrying cost (ownership) of a >2 people capacity car. Side note: Additionally, if parents can separate from their kids or each parent takes one kid into their robotaxi, this adds extra 'value' (peace) to parents. 4) 2 seaters are more space efficient on the road (less dead/unused volume) 5) Simpler design of 2 seater vs 4 seater accelerates time to market, reduces high volume capex need, accelerates ramp up. 6) The cheaper 2 seater unlocks greater availability at same investment amount (more 2 seaters can be made for the same cost than 4 seaters) and hence faster market penetration There is more but above covers the key points.