Diesel tabs to increase mileage? Who is using them?

[FONT=Arial,Helvetica]Ladies and gentlemen, attention please[/FONT]
[FONT=Arial,Helvetica]Come in close so everyone can see[/FONT]
[FONT=Arial,Helvetica]I got a tale to tell[/FONT]
[FONT=Arial,Helvetica]A listen don't cost a dime[/FONT]
[FONT=Arial,Helvetica]And if you believe that we're gonna get along just fine[/FONT] [FONT=Arial,Helvetica]Now I've been travelin' all around[/FONT]
[FONT=Arial,Helvetica]I heard trouble's come to your town[/FONT]
[FONT=Arial,Helvetica]Well I've got a little somethin'[/FONT]
[FONT=Arial,Helvetica]Guaranteed to ease your mind[/FONT]
[FONT=Arial,Helvetica]It's call Snake Oil y'all[/FONT]
[FONT=Arial,Helvetica]It's been around for a long, long time[/FONT]
[FONT=Arial,Helvetica]Say, your crops'll burn if it don't rain soon[/FONT]
[FONT=Arial,Helvetica]Ain't seen a drop since the tenth of June[/FONT]
[FONT=Arial,Helvetica]Well I can open up the sky[/FONT]
[FONT=Arial,Helvetica]People never fear[/FONT]
[FONT=Arial,Helvetica]If you ain't impressed yet, just tell me what you wanna hear[/FONT]
[FONT=Arial,Helvetica]Well you lost your farm so you moved to town[/FONT]
[FONT=Arial,Helvetica]You get a job, they shut the factory down[/FONT]
[FONT=Arial,Helvetica]Now you sit around all day long feelin' sad and blue[/FONT]
[FONT=Arial,Helvetica]You need Snake Oil y'all, tell you what I'm gonna do[/FONT]
[FONT=Arial,Helvetica]I can heal the sick, I can mend the lame[/FONT]
[FONT=Arial,Helvetica]And the blind shall see again, it's all the same[/FONT]
[FONT=Arial,Helvetica]Well ain't your President good to you[/FONT]
[FONT=Arial,Helvetica]Knocked 'em dead in Libya, Grenada too[/FONT]
[FONT=Arial,Helvetica]Now he's taking his show a little further down the line[/FONT]
[FONT=Arial,Helvetica]Well, 'tween me and him people, you're gonna get along just fine[/FONT]