The Tough Puzzle Competition

[Hoichi]

While reading texts about memory I found a delightful puzzle. I thought we could have some fun with this; the object of this thread is to see who can work it out (this is not an IQ test or anything as it doesn't really concern intelligence). To eliminate conformity answers should not be posted in this thread but instead IMed to me. In future if this is a success I will hold another version of this game with prizes going to one of the people who gets the answer right (I will pull a name out of a hat).

THIS DOES NOT PROVE THAT YOU ARE OR ARE NOT INTELLIGENT.

Good luck

[Hoichi]

The puzzle:

On a train, Smith, Robinson and Jones are the fireman, the guard and the driver but not respectively. Also aboard are three business men who have the same names: Mr. Smith, Mr. Robinson and Mr. Jones.

1. Mr. Robinson lives in Detroit.
2. The guard lives exactly halfway between Chicago and Detroit.
3. Mr. Jones earns exactly £20,000 a year.
4. The guard's nearest neighbour, one of the passengers, earns exactly three times as much as the guard.
5. Smith beats the fireman at billiards.
6. The passenger with the same name as the guard lives in Chicago.

WHO IS THE DRIVER?