article_snippet: Project Wing's aircraft have a wingspan of approximately 1.5m (4.9ft) and have four electrically-driven propellers.
article_snippet: The total weight, including the package to be delivered, is approximately 10kg (22lb).
article_snippet: Project Wing's aircraft accounts for the bulk of that at 8.5kg (18.7lb).
article_snippet: Dr Teller revealed Teller will make a major announcement on Project Wing progress later this year.
highlights_snippet: The 44-year-old added that the lab's focus is now on Project Wing .