"空飛ぶ車が欲しかった代わりに140文字が手に入った"

Simplified Meaning:

People had big dreams of amazing, futuristic inventions like flying cars. Instead, what we have now are short messages on social media. This shows how the things we often end up with aren't always what we once imagined or hoped for. For example, think about how kids imagine having powerful robots that do everything for them, but in reality, they get small gadgets like smartphones. The short messages highlight the focus on quick, shallow communication rather than the groundbreaking changes everyone imagined. To apply this to life, be open to unexpected changes and appreciate the smaller, simpler advancements around you, even if they don't match your big dreams. Embrace the progress in technology and find useful ways to make it a part of your life.