Business & Economics
Hydrogen
100%
Bus
76%
Car
60%
Personal Transport
25%
Electric Vehicle
11%
Public Transport
9%
Scenarios
8%
Electricity Grid
7%
Renewable Energy Sources
5%
Carbon Dioxide
5%
Carbon
4%
CO2 Emissions
4%
Electricity
3%
Policymaker
3%
Earth & Environmental Sciences
bus
80%
automobile
66%
hydrogen
56%
vehicle
21%
electric vehicle
12%
public transport
10%
electricity
8%
electrification
5%
renewable energy source
5%
carbon dioxide
3%
policy
2%
carbon
2%
comparison
1%
Social Sciences
electric vehicle
35%
public transport
28%
scenario
26%
electricity
24%
human being
19%
energy source
14%
renewable energy
13%
Engineering & Materials Science
Hydrogen
58%
Electric vehicles
8%
Electricity
6%
Carbon dioxide
4%
Renewable energy resources
3%
Carbon
3%