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Lines are no good. But - I did like Mike's line, that one made me smile -- and as was already said if you make her smile, you've got an in.
Cars won't necessarily impress unless 1) girl is into cars or 2) its a delorean or a ferrari. If 2 -- well you know the type.
Tyson, if you want to beat off women with intercooler hoses -- you might be in for some interesting women!