Saw the report for the E55 AMG the other day on Car & Driver. What a ride! 0-60 in 4.6 sec's! They actually talked up a Benz for once!
They said how it'll accelerate almost as fast as a Dodge Viper, but you get the comfort of the 4 door Benz. Of course it doesn't corner like a Viper, but I think I could live with that! Estmated cost is supposed to be around $75k. That puts it even cheaper than Viper I think.

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past MB rides:
'68 220D
'68 220D(another one)
'67 230
'84 SD
Current rides:
'06 Lexus RX330
'93 Ford F-250
'96 Corvette
'99 Polaris 700 RMK sled
2011 Polaris Assault
'86 Yamaha TT350(good 'ol thumper)