>>It has occurred to me that if mankind is going to expand to other planets sometime in
>>the future (The sooner the better) then a new engine type must be invented.
>>Chemical rockets will not do it and solar sails only work in solar wind.
>>Ion engines are not powerful enough either. If anti-gravity becomes possible
>>it will need gravity to work againts to produce motion and the further away
>>from a gravitaional source, the weaker it would get. So, do you have any ideas
>>on a solution for this future NASA problem?
>
>Fill a large vessel with US Congressmen. You'll have enough gas to get just about anywhere.

Oh! I think this reply might be a winner :)