The price is too high, it doesn't make sense.
Let's say you compare it to a small hatch like a suzuki swift. The dolphin is +R300k in price compared to the swift. If you do 15k km/year let's say, that's R18375/year you're spending in fuel for the swift. Assuming that you already have a solar system big enough to charge the dolphin entirely from solar, e.g. driving for free, it will take you 16.327 years to make up the price difference between the cars. Yeah, yeah, I know it's maybe not an entirely accurate comparison between a swift vs a dolphin, the dolphin does have some fancy tech and interior which may appeal to some people, but it's also unrealistic to assume that everyone has an existing solar system big enough to charge the dolphin for free, so let's call it even. Now I know some will probably say well that's a fair trade, 16 years and it'll cancel out, but that assumes that you have +R300k in spare capital lying around. If you had that R300k lying around, just put it into government retail bonds (for example - at 11.5% pa for a 5 year investment), that's R34500 in interest that you're earning per year, which is nearly double the fuel cost for the susuki swift. So unfortunately never mind taking 16.327 years to make up the difference in price, actually you're better off driving the suzuki swift for free and using the spare cash to pay for insurance and maintenance on the swift...