(Cugnotâs second model weighed 8,000 pounds and had a tendency to tip forward when it wasnât hauling heavy artillery behind it.) As a result, some observers argue that the first true automobile was gasoline-powered. They point to not one but two inventors: Karl Friedrich Benz and Gottlieb Daimler.
Pediatric bipolar disorder is commonly characterized by outbursts of anger, irritability and psychosis, rather than euphoric mania, which is more likely to be seen in adults. Early onset bipolar disorder is more likely to manifest as depression rather than mania or hypomania.
Bipolar Symptoms: Depression. In bipolar disorder, manic episodes alternate with periods of emotional lows, which are known as depressive episodes. Signs of a depressive episode may include: 1  Sadness, anxiety, or a feeling of emptiness. 2  Hopelessness. 3  Feelings of guilt, feeling worthless, or feeling helpless.