This would have come from "Mr Blair"(read: his press secretary)'s exchange of emails with Henry Porter in yesterday's Observer. He
said he wanted to extend powers for things like seizure of cash (at the moment police can confiscate cash over £4000 carried by a person on the street, he wants to reduce it to £1000) and, yes, I think seizure of drug dealers' cars was another one. (Whether they have to be convicted drug dealers, I can't remember. Probably not.)