Sack Lunch <| sep |> You ' re right . Elon is definitely an alien . And Area 51 is Northrop Grumman ' s experimental aircraft testing facility . I really don ' t know what the big deal about Area 51 is . Source I know a guy <| sep |> Yup , exactly . Or use any existing straight edge you may have as well . <| sep |> Two things 1 There is nowhere near enough chocolate spread on these things . and 2 Are these also made with chocolate ice cream instead ? <| sep |> The skycrane system isn ' t that much more complex than the airbag system . The airbag system used retro rockets to slow to near 0 velocity at 40 meters and the rovers were attached to the back shell with a cable that needed to be severed . The additional complexity is hit 0 velocity at 0 altitude . The benefits are the weight savings from no shell , airbags , and egress aids . Sending multiple rovers on 1 lander isn ' t efficient , they are too limited in range . Better separate EDL and spread them over more of the planet . I ' d argue we should be sending both class rovers , with varying science payloads to meet specific mission needs . Spirit and Opportunity class are lighter and more limited in payload but also cheaper so you could send multiple and explore more targets . Curiosity class would allow for more science but only at 1 spot , good for high value targets .