From the article: "solid-state batteries... don’t do well in cold weather, tend to weaken quickly after repeatedly getting charged and drained, are particularly

From the article: "solid-state batteries... don’t do well in cold weather, tend to weaken quickly after repeatedly getting charged and drained, are particularly costly... Toyota...said it may have solved the range and battery weight problems." Problems are A, B, C, and D, and Toyota solved X and Y. What gives?