Reliability issues in an ev conversion in a high stress environment?

What major concerns(reliability issues) should I look into when building an ev conversion system for a high stress environment such as the long haul trucking industry or construction work?

[QUOTE=NewIdeaz;5145]What major concerns(reliability issues) should I look into when building an ev conversion system for a high stress environment such as the long haul trucking industry or construction work?[/QUOTE]

make sure you have some decent cooling properties for it, (heat sinks, and what not) also make sure the components you use are quality ones so you minimize the risk of parts failure.

so as long as I spend good money and keep it cool it should do well? im just concerned that current motors wouldnt hold up in this situation