Ferrari Enzo.
The money doesn't stop flowing once the Enzo is in your garage, either. According to a 2003 Car and Driver article, replacing the brake pads costs $6,000, and the carbon-ceramic brake rotors go for $24,000. A special oil must be used (or else Ferrari will consider the warranty void) -- the oil costs $60 a quart. Oil required: Shell Helix 10w60 (syn) $60 a quart, 12.2 quarts are required. That's $732 before you even get to the filter and labor!
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'01 QS Corsa Touring exhaust with Tiger Shark tips. LG LT headers with X-Pipe, Hurricane intake w/ CF HF Power Duct, L.E.D. tail lights and shorty antenna. Lowered on stock bolts. Black Motorsports. FRC TOM tuned. NCM member 36741