It is often asserted that series hybrids are not as efficient as parallel hybrids (citation needed) but this is only because they are being built with inefficient reciprocating internal combustion engines. The obvious solution is to use microturbines.

This is not, repeat not an ad for any particular auto parts website. This is a condemnation of Kragen, Napa, and other such auto parts stores. Especially Napa because I extra-special hate them, but really, they all have to pay.

Today, parallel gasoline-hybrids are often touted as a cleaner, greener alternative despite the simple fact that avoiding purchasing a new car and sticking with your old one saves more energy and environmental impact in almost all cases. Rather than using the new technology to simplify the vehicle, hybrids are more complicated than their predecessors, and the results are not positive. The added weight of the electrical system means that the vehicle is either unusually heavy, or unusually expensive due to the necessity of balancing weight and crash safety. And the hybrid power system, most especially the batteries, comes at a substantial cost premium as well as substantially increasing environmental impact.