Now what? The secret sauce is tiling. [facklere] used KMZfactory, a free map editor for Garmin maps that goes the extra mile to split the tiles for you, keeping them under the 1MP limit.

The Nuvi vehicle downloads are free from a non-Garmin-affiliated third party, while most of the TomTom voices cost extra. Will this sort of thing have us trading in our Droid? Not a chance.

The entry-level Garmin Drive 52 can be bought with maps of just the UK and Ireland (£119.99) or with all of Europe (£149.99). It misses out on hands-free phone calling and Amazon Alexa ...