Not all USB cables have the data pins and charge fine of usb.I have a few like this. Working as an it engineer you gain all sorts of assorted cables! Joys
That's exactly right some people have made up such Cables.
If you use a cable like this to charge phone from a laptop you can crash the laptop may not be good for some head units.
One this topic I asked nissan if I could buy a nissan cigar lighter to fit and to my suprise they said the standard cigar lighter uses same connection as the usb so its one or other. I would have thought fusing and wiring for cigar lighter would be diferent aparently not.from this I'd say your probably fine with your cable adatation if used in micra.
Also driven Almera. Almera has good driving position, nice road manners/handling and better gear change. Mpg is almost as good as micra dispite much worse co2 figures but in every other respect micra k13 is better car.
For motorway should compare to other similar cars. Motorway mpg is very good. Road noise is ok, wind noise is a bit high. I'd still say compares well with other cars in same class.