To-date the humans have dispatched surface missions to
Mars has a thin atmosphere. Luna lacks one. Venus has a soup-thick atmosphere. Landing a static craft on Venus is one thing. Exploration, rather mobile exploration would be a different cup of tea altogether given the alien (pardon the pun!) atmosphere - high pressure, high wind force.
Assuming the Curiosity rover is capable of surviving the Venerean atmosphere, could electricity serve as it's motive power at 93 bar? [ (+: Or a rover equaling Curiosity in terms of mass, and payload. ]