That's true, and that's the problem.
Freepers are arguing for the right to drive drunk.
No, they're not, and that's where you fit into the leftie mold so perfectly, you have no concept of unreasonable search, oppressive government and tyranny.
There’s a concept called “ordered liberty,”
Yes there is, you and Joe Stalin agree that the government should decide when rights interfere with order and the government should revoke the rights it has granted.
That's one of many areas where you've shown yourself to be mistaken. I have an excellent concept of what constitutes an unreasonable search. If the interlock system transmitted its results (and a copy of the driver's license, and a description of the car) to the cops, it would be an outrageously unreasonable search and I would be opposed to such a system.
But it doesn't do that. It just keeps drunks from driving.