Technologically possible now:
http://www.breitbart.com/article.php?id=CNG.74f06613ea91a1f1041b96c96477427f.6d1&show_article=1 (http://www.breitbart.com/article.php?id=CNG.74f06613ea91a1f1041b96c96477427f.6d1&show_article=1)
If it's half what they say it is, that's very very cool.