Future global market demand for hybrid and battery electric vehicles may be over-hyped

While HEVs and BEVs offer an interesting alternative for the future, it must be acknowledged that many of the shortcomings that defined battery-based vehicles 100 years ago are still prevalent today. These include limited driving range, extended recharging times, limited support infrastructure, and the high cost of battery packs.

Moreover, while reducing exhaust emissions was not an important factor in the development of battery-based vehicles 100 years ago, it has been a significant driver behind the development of BEVs today. For many governments, the primary goal of transitioning to alternative powertrains is to reduce exhaust emissions, and it is not clear how much of this can be achieved.

"We don't want to replace tailpipe emissions with the emissions of coal- and oil-fired power plants that produce the electricity used by BEVs," said Humphrey. "We have to look at the carbon footprint of the entire energy supply chain."