I wonder if anyone has estimated the impact of "simple" engineering changes on the progress of electric cars.<p>I have seen things that extrapolate out battery progress, so if batteries become cheaper/lighter/more powerful in a similar way they have in the past then that has a big impact on EVs, dropping their price and/or increasing their range.<p>But a lot of things seem fairly simple, if not obvious except with hindsight e.g. heated steering wheels and seats instead of air heating, heat pumps rather than resistive heating, puncture resistant tyres rather than carry a spare, led lighting, replacing side mirrors with cameras for lower drag etc. How much can straightforward, no new tech, improvements in all these areas actually help if you add them up?