Glad to help. I believe these cars sell in the USA at Wal-Mart for all of $2 (1 GBP!!!!). I haven't seen any in our local WM's, otherwise I'd offer to pick some up for you.
You could try EBay. I think these go under a different name here, though again I can't confirm that. Looks like someone else is discussing these cars here, sounds like they may be marketed under the "malibu internationals" brand here:
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