That's right, the same brain that brought us such Now that the modern-day Porsche brain-trust is once again showing interest in hybrid technology, the German company has decided to bring back the 1900 Semper Vivus, which literally means always alive. Although the technology behind hybrids has come a long way - Porsche's first hybrid used about 4,000 pounds of lead acid batteries and could barely climb any kind of grade - the basic principles are actually much the same.