This is caused by the squeegee being angled incorrectly forcing the water under the rubber blade out into the dry area of the glass or from solution being pushed up into the top edge of the window.
Although there is a slight difference between our original calculation and Teslaâs new oneâlast fall we built in a cost of $6,500, Teslaâs current cost for a Powerwall as part of a Solar Roof installation is $7,000.
The basic model will start at $35,000 (Â£24,423) and have a range of at least 215 miles (346km) per charge. Tesla delivered 50,580 vehicles last year. Most of those were its Model S saloon, which overtook Nissan's Leaf to become the world's best selling pure-electric vehicle.