riddle me this

A group of flamingos is called a pat. A group of frogs is called an army. A group of rhinoceroses is called a crash. A group of kangaroos is called a mob. A group of apes is called a shrewdness. A group of cats is called a clutter. A group of owls is called a parliament. A group of larks is called an exaltation.

So... what do you call a group of lexus cars?

Lexuses? Lexi? Mini-moguls? michAel and i are officially stumped.