> cupholders seem to have fallen behind starbucks law of cup capacity What you're looking for is a "cup holder expander" or "cup holder adapter". Much like the

> cupholders seem to have fallen behind starbucks law of cup capacity What you're looking for is a "cup holder expander" or "cup holder adapter". Much like the cigarette lighter became a power delivery standard because it's there, so too has the cup holder become a standard, although admittedly quite a bit more nascent.