Our comparison between internal combustion engines and electric engines with a battery pack shows that the storage of energy onboard vehicles is a long standing problem.

我们比较在内燃机和电气发动机与一电池组一起之间显示舱中车辆是一个长的站的问题的能源的贮存。

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In the medium term, solar power combined with improved battery storage systems will make a difference, as will military vehicles with hybrid electric engines.

FORBES: Logistics